On Wed, 2003-11-19 at 11:49, sean whalen wrote:
> i don't think i can simply use schedule_timeout. i want to send an ethernet
> frame and wait for a max of 5 seconds for a reply, but i want to stop
> waiting if a response frame is received, so i need the timeout to be
> interruptible.
>
> is there a better way to do interruptible sleeping than
> interruptible_sleep_on_timeout?
yes
add_wait_queue( .... );
set_current_state(TASK_INTERRUPTIBLE);
while (packet_not_done()) {
timeleft = schedule_timeout(5 * HZ);
set_current_state(TASK_INTERRUPTIBLE);
}
remove_wait_queue( ... );
set_current_state(TASK_RUNNING);
or similar. That also fixes the race in your code that happens when the
packet is completed before your code even gets to the
interruptible_sleep_on_timeout().
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